Allen Engineering brake and collar kit for brake mounted suppressors, also known as the “SPR Kit”.
Included with the kit:
- 1/2-28 Brake with .22/5.56 caliber aperture. SHORT external thread extension can be used with either a crush washer or spacer/shims. This is the MK12 “clone correct” version.
- MOD 1 collar
- Thread protector
- Shim kit
For more information about brakes and thread lengths, click here.
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